<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>图片放大特效</title>
    <link rel="stylesheet" href="./index.css"  >
    <script src="./index.js"></script>
</head>
<body>
    <div class="box">
        <div class="smallbox">
          <img src="./small.jpg" alt="">
              <div class="mask"></div>
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          <div class="bigbox">
              <img src="./big.jpg" alt="" class="bigimg">
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</body>
</html>